39
3.
MAINTENANCE
Before removing the unit from its case, ensure that the unit is
disconnected from the mains. Under no circumstances connect
the unit to the mains whilst it is removed from its case.
3.1
Regulator Brushes
The regulator brushes should be examined and replaced if necessary. The interval between
inspection and renewal of the brushes will depend upon the amount of usage. However, it
should be remembered that damage to the regulator can result if the brushes are allowed to
wear away to such an extent that a loss of brush pressure occurs.
Figure 3.1 Regulator brush
3.2
Removal of the 200A-3PH mk2 from Case
To remove the instrument from its case, the following procedure should be used:-
1.
Remove the lid from the case, and place the unit on its face, such that it is resting on the
handles on the front panel.
2.
Remove the four fixing screws from the base of the unit.
3.
Lift the case from the unit, taking care not to damage the earth lead from the unit to the
case.
WARNING
Regulator Brush
Locking Screw
